
<script>
Date.prototype.format = function(format) {
  var o = {
    "M+" :this.getMonth() + 1,
    "d+" :this.getDate(),
    "h+" :this.getHours(),
    "m+" :this.getMinutes(),
    "s+" :this.getSeconds(),
    "q+" :Math.floor((this.getMonth() + 3) / 3), // quarter
    "S" :this.getMilliseconds()
  }
  if (/(y+)/.test(format)) {
    format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
  }
  for ( var k in o) {
    if (new RegExp("(" + k + ")").test(format)) {
      format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k]:("00" + o[k]).substr(("" + o[k]).length));
    }
  }
  return format;
}
 console.log(new Date().format("yyyy-MM-dd hh:mm:ss")); 
//console.log(new Date().format("yy-MM-dd hh:mm:ss"));
//console.log(new Date().format("yy-MM-dd h:m:s"));



</script>

